地震反演技术在歧北斜坡沙一段下亚段储层预测中的应用
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摘要
地震反演是储层预测的核心技术,它对储层在空间横向上的分布有很好的预测作用,可作为发现隐蔽油气藏的有效手段,井约束下的波阻抗反演在岩石物性差异较大的地区具有较好的应用效果。本文在地质储层特征研究的基础上,通过地震资料的分析与处理、测井曲线的标准化与特征曲线的重构、子波的提取与层位标定等一系列前期处理工作,优选出了反演参数,对歧北斜坡沙一段下亚段进行了储层预测,直观地刻画了岩性的空间分布规律,确定了3个有利区块,为该区的井位部署及储层评价提供了有力的支撑。
Seismic inversion is the core technology of the reservoir prediction. It has very good prediction effect on reservoir transverse distribution in space and can be used as effective means of discovering subtle reservoirs.The impedance inversion restricted by well has good application effect in the region where the petrophysics have much differences.Based on the study of geological reservoir characteristics,by means of the seismic data analysis and processing,the bore log standardization,characteristic curve reconstruction,wavelet extraction and horizon calibration the inversion parameters are optimized,finally the reservoirs are predicted in Es1x in Qibei slope,the spatial distribution laws of the lithology are intuitively portrayed and three favorable blocks are discovered,with technological support are provided for the well deployment and reservoir evaluation.
Seismic inversion is the core technology of the reservoir prediction. It has very good prediction effect on reservoir transverse distribution in space and can be used as effective means of discovering subtle reservoirs.The impedance inversion restricted by well has good application effect in the region where the petrophysics have much differences.Based on the study of geological reservoir characteristics,by means of the seismic data analysis and processing,the bore log standardization,characteristic curve reconstruction,wavelet extraction and horizon calibration the inversion parameters are optimized,finally the reservoirs are predicted in Es1x in Qibei slope,the spatial distribution laws of the lithology are intuitively portrayed and three favorable blocks are discovered,with technological support are provided for the well deployment and reservoir evaluation.
引文
[1]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4):385-390
[2]庞雄奇,陈冬霞,张俊.隐蔽油气藏的概念与分类及其在实际应用中需要注意的问题[J].岩性油气藏,2007,19(1):1-8
[3]王洪亮,王军,杨英波等.测井技术在X气田油藏描述中的应用[J].岩性油气藏,2009,20(3):6-11
[4]刘卫华,高建虎,陈启艳.苏里格气田某工区储层预测可行性研究[J].岩性油气藏,2009,12(2):80-86
[5]曾正.合成地震记录层位标定方法改进[J].石油地球物理勘探,2005,40(5):576-581
[6]张广智,刘洪,印兴耀.井旁道地震子波精细提取方法[J].石油地球物理勘探,2005,40(2):159-163
[7]马劲风,王学军,谢言光.波阻抗在反演中低频分量构建经验与技巧[J].石油物探,2000,39(1):27-34
[2]庞雄奇,陈冬霞,张俊.隐蔽油气藏的概念与分类及其在实际应用中需要注意的问题[J].岩性油气藏,2007,19(1):1-8
[3]王洪亮,王军,杨英波等.测井技术在X气田油藏描述中的应用[J].岩性油气藏,2009,20(3):6-11
[4]刘卫华,高建虎,陈启艳.苏里格气田某工区储层预测可行性研究[J].岩性油气藏,2009,12(2):80-86
[5]曾正.合成地震记录层位标定方法改进[J].石油地球物理勘探,2005,40(5):576-581
[6]张广智,刘洪,印兴耀.井旁道地震子波精细提取方法[J].石油地球物理勘探,2005,40(2):159-163
[7]马劲风,王学军,谢言光.波阻抗在反演中低频分量构建经验与技巧[J].石油物探,2000,39(1):27-34
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